Struct FontFeature 

pub struct FontFeature {
    pub tag: String,
    pub value: i32,
    pub start: i32,
    pub end: i32,
}

Font feature.

Fields

tag: String

Gets or sets the tag.

value: i32

Gets or sets the value.

start: i32

Gets or sets the start.

end: i32

Gets or sets the end.

Implementations

impl FontFeature

pub fn parse(s: &str) -> FontFeature

Parses a string to return a FontFeature.

Syntax is the following:

• Syntax — Value — Start — End
• kern — 1 — 0 — ∞ — Turn feature on
• +kern — 1 — 0 — ∞ — Turn feature on
• -kern — 0 — 0 — ∞ — Turn feature off
• kern=0 — 0 — 0 — ∞ — Turn feature off
• kern=1 — 1 — 0 — ∞ — Turn feature on
• aalt=2 — 2 — 0 — ∞ — Choose 2nd alternate
• kern[] — 1 — 0 — ∞ — Turn feature on
• kern[:] — 1 — 0 — ∞ — Turn feature on
• kern[5:] — 1 — 5 — ∞ — Turn feature on, partial
• kern[:5] — 1 — 0 — 5 — Turn feature on, partial
• kern[3:5] — 1 — 3 — 5 — Turn feature on, range
• kern[3] — 1 — 3 — 3+1 — Turn feature on, single char
• aalt[3:5]=2 — 2 — 3 — 5 — Turn 2nd alternate on for range

A string that does not match gives the default (empty tag) feature.

Trait Implementations

impl Clone for FontFeature

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for FontFeature

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for FontFeature

fn default() -> Self

Creates an instance of FontFeature.

impl Display for FontFeature

Gets a string representation of the FontFeature.

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for FontFeature

impl FromIterator<FontFeature> for FontFeatureCollection

fn from_iter<I: IntoIterator<Item = FontFeature>>(iter: I) -> Self

Creates a value from an iterator.

impl FromStr for FontFeature

type Err = !

The associated error which can be returned from parsing.

fn from_str(s: &str) -> Result<Self, Self::Err>

Parses a string s to return a value of this type.

impl Hash for FontFeature

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl MarkupTyped for FontFeature

const MARKUP: &'static MarkupType

The markup metadata of the type.

impl PartialEq for FontFeature

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for FontFeature